Has anyone's DC had a new mole appear in site of injection, if so were there any problems in later life?

My DD has a large mole at the top of her thigh which appeared after her 4mo vaccination. Her leg was bruised after the injection which then died down and then developed into a 5mm pale brown mole.

I am very upset about this and am getting worried now as she is due her booster tomorrow. I just want some reassurance that DD will be ok perhaps it will fade? Has this happened to anyone else out there?

Thanks, I had put it out of my mind it is just because it is her booster tomorrow. I did google it and found no mention so I am assuming its harmless and the hv and docs aren't worried. I'm just upset that it happened.

When my dd was born I stupidly agreed to let her trial a new anathestic for babies which was applied before an injection. It was just like a wet wipe used to numb the area before the injection. Anyway, that was all fine and they gave her a jab in her back (she was only 2 days old fgs, what on earth was I thinking) and a mole has developed there. She is 9 years old now and I've always regretted my stupid decision.